Add a class to allocate small objects w/o extra calls to new.

src/core/SkCoreBlitters.h

 /*
  * Copyright 2006 The Android Open Source Project
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef SkCoreBlitters_DEFINED
 #define SkCoreBlitters_DEFINED
 
+#include "SkBitmapProcShader.h"
 #include "SkBlitter.h"
 #include "SkBlitRow.h"
+#include "SkShader.h"
+#include "SkSmallAllocator.h"
 
 class SkRasterBlitter : public SkBlitter {
 public:
     SkRasterBlitter(const SkBitmap& device) : fDevice(device) {}
 
 protected:
     const SkBitmap& fDevice;
 
 private:
     typedef SkBlitter INHERITED;
@@ skipping 145 matching lines @@
     paint:
 
     1. If there is an xfermode, there will also be a shader
     2. If there is a colorfilter, there will be a shader that itself handles
        calling the filter, so the blitter can always ignore the colorfilter obj
 
     These pre-conditions must be handled by the caller, in our case
     SkBlitter::Choose(...)
  */
 
-extern SkBlitter* SkBlitter_ChooseD565(const SkBitmap& device,
-                                       const SkPaint& paint,
-                                       void* storage, size_t storageSize);
+SkBlitter* SkBlitter_ChooseD565(const SkBitmap& device, const SkPaint& paint,
+                                SkTBlitterAllocator* allocator);
 
 #endif